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Sea-salt deposition and wetness time in brace steel pipes observed using atmospheric corrosion monitoring sensors

机译:使用大气腐蚀监测传感器观察支撑钢管中的海盐沉积和润湿时间

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An analytical program is developed to evaluate corrosion factors based on atmospheric corrosion monitoring sensor output. This program estimates the daily sea-salt amount W_S and assigns rain/dew/dry conditions to instantaneous data. Mock pipes with a length of 4.8-m are installed at a Japanese coastal area for 36 months to evaluate the corrosion environment inside the electric transmission tower pipes. W_S reaches 10 g/m~2 under strong wind conditions such as a typhoon and decreases to 10~(-2) g/m~2 during rainfall. Conversely, the inside of the pipe remains almost dry, even if the pipe is aligned to make the sea breeze flow easily. However, at the pipe edge, W_s tends to show constant values. The dew duration becomes significant if W_S reaches 10~(-1) g/m~2, indicating deliquescence of sea salt. The sensor output in such dew duration is found to play a dominant role in determining the corrosion rate.
机译:开发了一个分析程序,以评估基于大气腐蚀监测传感器输出的腐蚀因素。该计划估计每日海盐量W_S并将雨/露/干燥条件分配给瞬时数据。长度为4.8米的模拟管安装在日本沿海地区36个月,以评估电动传输塔管内的腐蚀环境。 W_S在强风条件下达到10g / m〜2,如台风,降雨期间降至10〜(-2)克/ m〜2。相反,即使管道对齐,管道内部几乎保持干燥,使海风容易流动。然而,在管道边缘处,W_S倾向于显示恒定值。如果W_S达到10〜(1)克/ m〜2,则露水持续时间变得显着,表明海盐的潮解。发现在这种露天持续时间中的传感器输出在确定腐蚀速率方面发挥着主导作用。

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